Pistol holster sleeve



FIG. 1 is a side elevated view of a pistol holster sleeve showing my new design;

FIG. 2 is a front elevated view of the pistol holster sleeve;

FIG. 3 is a rear elevated view of the pistol holster sleeve;

FIG. 4 is a top plan view of the pistol holster sleeve; and,

FIG. 5 is a bottom plan view of the pistol holster sleeve. 

The ornamental design for a pistol holster sleeve, as shown and described. 